Clock



FIG. 1 is a front elevation view of the present invention.

FIG. 2 is a rear elevation view thereof.

FIG. 3 is a right side elevation view thereof;

FIG. 4 is a left side elevation view thereof.

FIG. 5 is a top plan view thereof.

FIG. 6 is a bottom plan view thereof; and,

FIG. 7 is a right front perspective view thereof. 

The ornamental design of a clock, as shown and described. 